Which interenet setting are you using? you shoud not use the normal ones for wap furfing coming from your operator, but jsut the internet ones skipping that are avaoiding the wap gateway.

If you do not have them creare a new one: go to tools/setting/connections, access point, options, new access point, use defalut settings and name it 'internet' with this parameters:
-connection name: internet
-data bearer: gprs
-acces point name: internet
-user name: none (leave it empty)
-propmt password: no
-password: none (leave it empty)
-authentication: normal
-Homepage: none (leave it empty)

If it stil ldoes not work your operator might be prohibiting using certain ports (either as ap olicy or because agreed with your company if you have a corporate SIM)

hi! im using a nokia 6600! and i rily need a ym for my cellphone!! i tried agilemessenger and didnt work for me... and im about to give it a try one more time and try to put this settings... but my question is i dont a have any gprs.internet plan like the 20$ i nt-mobile.... will it work for me?? i only have the free wap from t-mobile?????